On Monday I got two postcards: one from Russia and one from Germany.
The card from Russia shows the Saint Michael's Castle in Saint Petersburg. The Saint Michael's Castle was built between 1797 and 1801 as a residence for Emperor Paul I. It was built in a combination of French Classicism, Italian Renaissance and Gothic. Due to his fascination with medieval knights and his constant fear of assassination Paul I ordered the new royal residence to be built like a castle, but ironically he was killed in his own bedroom just 40 nights after he moved to his new residence. Today the Saint Michael's Castle houses the Portrait Gallery of the Russian Museum.
With a matching stamp:
Kaluga Oblast (issued 30-11-2011)
EUROPA (issued 15-03-2017)
Thank You very much Olga!